Head to head · Sleep & Stress
Moon Juice Magnesi-Om vs Nutricost KSM-66 Ashwagandha Root Extract 600 mg
Nutricost scores higher overall (8.1 vs 6.5 out of 10) and leads on four of the five factors we score.
Updated September 2026 from our full reviews · How we score
The TikTok-famous 'Sleepy Girl Mocktail' magnesium: tasty and third-party tested, but mostly laxative magnesium citrate at about $1.47 a serving.
We may earn a commission when you buy through these links — it never affects our scores. How we make money
A full 600 mg daily dose of organic KSM-66 ashwagandha in one capsule for about $0.25-$0.28 a day. Strong value; not for pregnancy or thyroid conditions.
We may earn a commission when you buy through these links — it never affects our scores. How we make money
We may earn a commission when you buy through these links — it never affects our scores. How we make money
The short answer
Choose Moon Juice if…
- People who enjoy a flavored bedtime drink ritual
- Those who also want a gentle laxative effect
- Shoppers who value tested, sugar-free ingredients
Choose Nutricost if…
- Budget-conscious buyers
- Stress-related sleep trouble
- People who want a single daily capsule
- You care most about efficacy, value, experience, transparency
- You want the lower cost per serving ($0.28)
Side by side
| Magnesi-Om | KSM-66 Ashwagandha Root Extract 600 mg | |
|---|---|---|
| Our score | 6.5 / 10 | 8.1 / 10 |
| Efficacy (30%) | 6.3 | 7.8 |
| Quality & Purity (25%) | 7.3 | 7.4 |
| Value (20%) | 4.5 | 9.0 |
| Experience (15%) | 7.4 | 8.2 |
| Transparency (10%) | 7.8 | 8.5 |
| Form | Powder | Capsule |
| Serving | 1 teaspoon30 servings per container | 1 capsule60 servings per container |
| Price per serving | $1.47 | $0.28 |
| Testing & certifications | Third-party tested | cGMP facilityThird-party tested |
| Dietary | Vegan, Non-GMO, Sugar-free | Vegetarian, Gluten-free, Non-GMO |
| Key ingredients |
|
|
| Flavors | 5 (Berry, Blue Lemon, Guava…) | — |
| Creator video reviews | 5 | 3 |
Pros and cons
Magnesi-Om
- Clearly disclosed dose of each magnesium form plus 112 mg L-theanine
- Sugar-free, monk-fruit sweetened; buyers consistently praise the taste
- Finished product retested by a third-party lab to California Prop 65 limits
- Several flavors plus an unflavored 'Naked' version
- About $1.47 per serving at list price, far more than comparable magnesium
- Two-thirds of the magnesium is citrate, and stomach pain and cramping are recurring buyer complaints
- 310 mg is close to the 350 mg daily upper limit for supplemental magnesium
- Sleep evidence for magnesium is weak, and L-theanine is below studied doses
KSM-66 Ashwagandha Root Extract 600 mg
- 600 mg KSM-66 per capsule, the dose range where a meta-analysis found stronger sleep effects
- About $0.25-$0.28 per daily serving
- Label discloses standardization: at least 5% withanolides and under 0.1% withaferin A
- Organic KSM-66 in a vegetarian capsule; non-GMO and gluten-free
- Benefits build over weeks, and some buyers report no effect
- Headaches reported by some buyers; not for pregnancy, with rare liver-injury reports and possible thyroid effects
- No NSF, Informed Choice or similar product certification despite third-party testing claims
Our verdicts
Magnesi-Om
Magnesi-Om is a pleasant, transparent and third-party tested drink mix, and some people clearly love it as a nightly ritual. But its magnesium is mostly citrate, the evidence for magnesium and sleep is weak, and the price is steep, so we see it as an overhyped, overpriced option rather than a sleep solution. If you want to try magnesium for sleep, a much cheaper magnesium glycinate is a better first step.
Full review
KSM-66 Ashwagandha Root Extract 600 mg
This is a no-frills, correctly dosed KSM-66 product at one of the lowest prices in the category, which makes it our value pick for ashwagandha. The evidence for stress and sleep is encouraging but modest, and the safety caveats around thyroid, liver and pregnancy are real, so it is best treated as an eight-week trial with a clinician's okay rather than a permanent staple.
Full review
What creators say
Questions people ask
Is Moon Juice better than Nutricost?
Which is cheaper per serving, Moon Juice or Nutricost?
Who should choose Moon Juice over Nutricost?
More sleep & stress comparisons
KSM-66 Ashwagandha Root Extract 600 mg vs Sleep Gummies (Blackberry Zen)
Melatonin Fast Dissolve Tablets vs KSM-66 Ashwagandha Root Extract 600 mg
Dream Sleep Powder vs KSM-66 Ashwagandha Root Extract 600 mg
Melatonin Fast Dissolve Tablets vs Sleep Gummies (Blackberry Zen)
Dream Sleep Powder vs Sleep Gummies (Blackberry Zen)
Dream Sleep Powder vs Melatonin Fast Dissolve Tablets
See all sleep & stress, ranked